Grammarly vs Quillbot: Which AI Helps Students More?

In today’s digital age, students have more AI-powered tools than ever to improve their writing. Two of the most popular are Grammarly and Quillbot. While both tools aim to help users write better, they serve different purposes and offer distinct features. So, the question is: which one helps students more?

Let’s break down their strengths, weaknesses, and find out which is the better fit for different types of students.

1. What Is Grammarly?

Grammarly is an AI writing assistant that focuses primarily on grammar checking, spelling correction, style improvement, and even tone detection. It’s been around since 2009 and is widely trusted by students, professionals, and educators.

With Grammarly, students can:

Fix grammar and punctuation errors.

Improve sentence structure.

Get vocabulary suggestions.

Receive tone feedback for emails, essays, and more.

Key Features of Grammarly:

Real-time grammar checker

Plagiarism checker (Premium)

Writing tone detector

Vocabulary enhancement suggestions

Integration with Google Docs, MS Word, browsers, and more

2. What Is Quillbot?

Quillbot is best known for its AI-powered paraphrasing tool. Students often use it to rewrite sentences, improve clarity, or avoid plagiarism by changing the sentence structure without losing the original meaning.

With Quillbot, you can:

Paraphrase articles or essays

Use different writing modes (e.g., Fluency, Formal, Creative)

Summarize long texts

Check grammar (basic)

Generate citations automatically

Key Features of Quillbot:

Advanced paraphrasing modes

Summarizer tool

Grammar checker (basic)

Citation generator

Word freezing (keep certain terms unchanged)

3. Use Cases: Grammarly vs Quillbot

Let’s say you're writing a college essay. Here’s how both tools help:

Grammarly will correct your grammar, improve clarity, and ensure your tone is academic and professional.

Quillbot can help you rephrase ideas if you're struggling with originality or word flow.

For non-native English speakers, both tools can be incredibly useful:

Grammarly helps with accurate writing.

Quillbot helps with paraphrasing complex texts into simpler ones.

4. Accuracy and Quality

In terms of grammar correction, Grammarly is more advanced. It not only fixes basic errors but also gives context-aware suggestions, such as:

Using active voice

Avoiding wordiness

Improving formal tone

On the other hand, Quillbot’s paraphrasing is quite good, especially in premium modes. But sometimes, it might change the sentence too much or alter the intended meaning, so students need to double-check the output.

If your focus is on correct grammar, go with Grammarly. If you're looking for smart paraphrasing, Quillbot is the winner.

5. Pricing and Accessibility

Both tools offer free versions, but they’re limited.

Feature Grammarly (Free) Grammarly (Premium) Quillbot (Free) Quillbot (Premium)

Grammar ✔️ ✔️ Advanced ✔️ Basic ✔️ Advanced

Paraphrasing ❌ ❌ ✔️ Limited modes ✔️ 7+ modes

Summarizer ❌ ❌ ✔️ Limited ✔️ Unlimited

Plagiarism ❌ ✔️ ❌ ❌

Price/month Free ~$12 Free ~$10

If you’re on a budget and need paraphrasing, Quillbot Free is already useful. But for students writing long papers, Grammarly Premium’s in-depth suggestions might be worth the cost.

6. Plagiarism and Academic Integrity

Grammarly Premium includes a plagiarism checker that scans billions of web pages. This helps students stay safe from accidental copying.

Quillbot doesn’t offer a plagiarism checker, but since it helps paraphrase, it reduces the risk of duplicate content — as long as the rephrased version is accurate and cited.

Important: No AI tool can guarantee 100% originality. Always cite your sources and don’t rely fully on paraphrasers.

7. User Interface and Integration

Grammarly has extensions for Chrome, Firefox, Edge, MS Word, Google Docs, and even desktop apps.

Quillbot also has a Chrome extension and integrations with Docs, but the interface is more focused on rewriting.

Students who want a proofreading companion while writing will prefer Grammarly. Those who want a paraphrasing station will enjoy Quillbot.

Final Verdict: Which One Is Better?

Grammarly is the best choice for:

Essay proofreading

Email and paper tone correction

Fixing grammatical issues

Quillbot is the best choice for:

Paraphrasing or rewriting

Shortening or summarizing

Rewording to avoid plagiarism

The best combo? Use both. Start with Quillbot to rephrase your draft, and finish with Grammarly to polish it up.